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Factory-authorized dealer

2003-2007 Honda Accord sedan

2003 • 2004 • 2005 • 2006 • 2007

Buck Pomerantz was born and raised in Philadelphia. His parents bought their first television set when he was born. He figured out how to run it by the time he was two. Besides athletics, his formative interests included electronics, amateur radio, music, and stage crew work. He got his BA in writing from Brown University. Then he joined a rock 'n roll band as their soundman and moved to Charlottesville, Virginia. After that venture failed, he spent time in Boston, New Orleans, and Berkeley. He worked in a music store in Austin manufacturing, installing, repairing, and operating sound systems for recording studios, clubs, and bands. He moved back to Charlottesville, ran a little recording studio and finally joined Crutchfield as a copywriter. He has 2 grown children and 3 grandchildren, but after a good nap he can still rock out.

This article is an overview of your vehicle's audio system and its upgrade options. If you're looking for step-by-step instructions on installing a car stereo or speakers in your Accord, we'll include a Crutchfield MasterSheet™ free with your Crutchfield order, or you can purchase one for $9.99.

2003 Honda Accord EX sedan (Crutchfield Research Photo)

Overview

The Honda Accord sedan has long been the poster child for what the automotive industry does right. It's attractive, comfortable, safe, reliable, and known for maintaining a high resale value. Most people keep their Honda Accords for a long time, so it makes sense to upgrade the stereo system. Honda claims six speakers — two of them are tweeters — and 120 watts of power for the Accord’s sound system. The reality is that it's powered by a low-output Honda radio (roughly 10 watts RMS x 4 channels) that, along with the speakers, could stand a lot of improvement.

The Accord's factory radio (Crutchfield Research Photo)

Replacing your factory radio

You have plenty of room behind the dash, so you can install any DIN radio in the Accord. If you don't have the dual climate controls in your Accord, you have a choice on how to install a new car stereo in your dash. You can use a simple dash kit to put the radio in the factory pocket below the existing radio, or you can purchase a more sophisticated dash adapter that replaces the entire climate control/radio pod. The adapter houses the new radio, and retains heating, ventilation, and air conditioning controls in vehicles with either single- or dual-zone climate control systems.

The factory stereo removed (Crutchfield Research Photo)

It may seem intimidating taking the dash apart from the gear shifter all the way up to the AC vents but, by following the step-by-step instructions in your free Crutchfield MasterSheet™, you’ll find it’s not that complicated.

You remove the factory radio/changer, only to unplug its car harness and antenna. Then, you drape those cables down to where the new receiver’s going and put the radio and dash back together, replacing the old storage bin with the new dash kit, which has a small storage shelf of its own. Once all that's done, you can install a single-DIN sized (2" tall) aftermarket receiver into the opening provided.

You will need the factory radio security code if radio power is interrupted and the factory radio is re-installed. Honda usually includes this code on a card in the owner's manual. If you don't have that card, you'll have to talk to your local Honda dealer. Also, you'll lose your Honda's satellite radio capability when you replace the radio, but there are plenty of aftermarket solutions for that problem.

Accord stereo with navigation (Crutchfield Research Photo)

If you have the factory navigation receiver, you'll have to enter two codes if the power is disconnected: one for the navigation system and one for the audio system. Once these codes have been correctly entered, the entire system will be unlocked and ready for use.

Tools needed: A Phillips screwdriver, a small flat-blade screwdriver, and a panel removal tool.

Steering wheel audio controls

It's relatively easy to retain your Accord's steering wheel audio controls when you install a new stereo. When you enter your vehicle information, our database will choose the adapter you need to make your factory steering wheel controls work with your new receiver.

Replacing your factory speakers

Depending on the options package, the Honda Accord will have speakers in the doors, the dash, and the rear deck.

Tweeters

Factory tweeter location (Crutchfield Research Photo)

The "6-speaker system" includes two tweeters mounted in the upper corners of the dash. The only tool you’ll need to install new tweeters is a flat blade screwdriver, but you’ll need to use our Universal Backstraps or some other way to secure your new tweeter in the factory grille assembly.

You’ll also need Posi-Products speaker connectors to connect them to the factory wiring, because there’s no tweeter harness available. The factory tweeter has its crossover built-in, so the simplest way to replace them would be with one that also has its crossover built-in.

If you are adding components, it would be best to put the crossovers near the radio. Connect the front door speaker leads to the woofer output on the crossover network, and then run new speaker wire from the crossover to the tweeter. This keeps you from having to pull a new wire through the Molex plug in the door jamb, which on most Hondas is nearly impossible.

Tools needed: flat blade screwdriver

Front door speakers

The Accord's front door speakers are easy to deal with (Crutchfield Research Photo)

The plastic-framed factory 6-1/2" speakers unclip easily enough from the door frames, but you'll need to drill new mounting-screw holes into the door steel to install any new speakers. Aftermarket options include 5-1/4" and 6-1/2" speakers.

Both sizes require adapter brackets. Speaker harnesses are available for all locations in the Accord except the tweeters. These will let you connect your new speakers to the car’s harnesses without cutting or soldering wires.

These brackets and harnesses are available at a very nice discount when you order from Crutchfield.

Rear deck speakers

The Accord's rear deck speakers (Crutchfield Research Photo)

The rear deck 6"x9" speakers are much easier to replace. There's plenty of room there, so most aftermarket 6"x9" speakers will fit, and you have the option of installing 5-1/4" and 6-1/2" speakers with the help of mounting brackets.

Bass in your Accord

The factory system, at least, can really do with the additional bass a subwoofer provides. The roomy trunk offers plenty of space for a sub, enclosure, and amplifier. And you can also consider small powered subs that'll fit under the front seat.

Another solution is to replace the rear deck speakers with 6-1/2" or 6"x9" subs, for a stealthy way to get bass. If you choose this option, make sure you use plenty of Dynamat or another noise-dampening material on the back deck. This material will keep the deck from rattling and buzzing when the small subs start pumping out lots of bass.

You can replace the rear deck speakers with subs (Crutchfield Research Photo)

Other options

There are plenty of options available when you decide to take your Accord to a whole new level.

Security and remote start

Installing a security system in your Accord isn't easy (security systems rarely are), but it's less complicated than it could be. Our Crutchfield Advisors can help figure out what you need to get the job done, but we usually recommend taking your car and new gear to a professional installer.

Keep the factory radio

If you want to leave your Honda’s radio connected, you can still add features like Bluetooth® and iPod® connectivity by way of accessory adapters and harnesses that hook in behind the factory radio. Some Hondas come with XM Radio built-in, and you'll lose that if you replace your radio. If you're a satellite radio addict, pick a new car stereo that supports SiriusXM so you can keep listening to your favorite channels.

Step-by-step upgrades for your Honda’s sound system

The great thing about upgrading car audio is that you don't have to do it all at once. You can replace your car's old audio gear as your time and budget allows.

First, the speakers

Replacing the speakers brings immediate improvement to the sound. The easiest way is to replace the front door speakers with coaxial, full-range speakers. But your best choice is to replace your four front speakers with separate woofers and tweeters, as these component speakers will help you achieve superior presence and stereo soundstaging.

Add an amplifier and subwoofer

An aftermarket amp driving new speakers will really bring impact and excitement to the ride. If you're keeping your factory radio, pick an amp with speaker-level inputs so you can tap into the factory radio’s harness to get signal. You can also use a line output converter to prep the signal for an amp that just offers preamp inputs.

Replace the radio

When it comes to serious playtime, you’ll want a receiver that can keep up with all the different media you’ll want to feed it, and give you more than the typical treble and bass controls. Many high-end receivers now come with time alignment and automatic EQ features that can bring breathtaking stereo imaging to your on-the-road listening. And, of course, they're ready for digital media, Internet radio streaming, and much more.

Comments

Steve from 28164

Is it possible to add a Aux/MP3 port to a 2007 Honda Accord Coupe? It currently has the standard factory radio/single CD. A friend tried & said it couldn't be done. If so what do I need to do so.
Thanks

Posted on 4/30/2015 6:37:00 AM

Jon Paulette from Crutchfield

Steve,
There are adapters available that can will allow you to add a port to your receiver. To search online, enter your vehicle info into the "Outfit My Car" feature on our homepage. Or, you can call or chat with one of our expert advisors.

Posted on 4/30/2015 1:48:18 PM

Jeremy

Is it possible to find a dash kit for this car that doesn't install the radio in the lower dash pocket. I like the way Honda set up the stereo but i just want to upgrade it keeping the reciever in the higher level dash and having the pocket at the lower level

Posted on 5/3/2015 5:05:08 AM

Jon Paulette from Crutchfield

Jeremy: Because the climate controls and receiver are so completely integrated in your Accord, the available dash kits are designed to fit beneath that assembly. There is, however, the Metra 88-00-7803 Dash Pocket, which replaces the entire assembly in Accords that don't have factory nav. If you have any questions, just contact our sales team via phone or chat.

Posted on 5/4/2015 12:03:27 PM

Lucas from Canada

I installed an alpine aftermarket deck beneath the factory head unit in my 03 accord, is there a way to feed power to both of them? because currently only the alpine is powered and id like the factory unit to light up so i could see the buttons for climate control, thanks.

Posted on 5/17/2015 8:23:41 PM

Jon Paulette from Crutchfield

Lucas,
To get your climate controls to work properly, you'll need some additional gear. Our Vehicle Selector will help you find the right mounting kit and wiring harness for your car. You'll have to reinstall your new receiver, but the improvement in functionality will be totally worth it. Good luck!

Posted on 5/19/2015 5:17:05 PM

Benjamin from south dakota

I recently replaced all 6 speakers in my 2005 Accord. I am now looking at installing an amplifier but I am not sure how, what kind to get, or if I even need one at all. Please help!

Posted on 6/7/2015 3:16:40 AM

Jon Paulette from Crutchfield

Benjamin, Sounds like an excellent plan. Our car amplifier buying guide is the best place to get started. If you have any questions, just give us a call!

Posted on 6/8/2015 11:09:39 AM

Steve from Poquoson, VA

My 2004 Honda Accord radio's backlight has gone out therefore I cannot see any of the radio settings, a/c setting etc. This is a know issue that Honda addressed up until 2011, now apparently it's all on the owner. My ? is what radios are compatiable with mine ? On the faceplate is stamped RBK1. Apparently there are 50 (maybe not that many but it seems like it) different varations of this model, that I've found on ebay and amazon I just don't know which one I can use. On the back of my radio / faceplate there are 2 green connector up high, 1 black and 1 white connector down low. Any assiatance would be greatly appreciated.

Posted on 6/22/2015 12:25:51 PM

Jon Paulette from Crutchfield

Steve, If you're looking to replace the old radio with a "new-to-you" model, you might want to visit some Honda owners' forums online. There's a ton of community knowledge about these cars, so if this is a known issue, someone has undoubtedly tried this swap before. Good luck!

Posted on 6/23/2015 9:17:23 AM

Gregory Stavrou from United States

Hello,
I just replaced the factory rear speakers on my 2005 Accord EX and i tried installing back the old grills, but it seems that they wont go all the way down, any thoughts on how to fix this? note that the new speakers did bring their own grill but i tried placing them and no go. Thoughts?

Posted on 7/8/2015 5:57:48 PM

Jon Paulette from Crutchfield

Gregory, It sounds like the tweeter structure might be too high. This car only has a 1/2" mounting height clearance, and most speakers are taller than that. If you bought your speakers at Crutchfield, call our tech department for advice. You also might be able to exchange them for something that fits better. Good luck!

Posted on 7/9/2015 9:43:59 AM

Segun from America

hello what are some good speakers to get for my 04 honda accord lx sedan, I want to replace my stock speakers (both and rear) with some inexpensive solid speakers that provide great bass and clean sound and doesn't require an amp. What do you recommend? thanks

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